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Submission #401381

# Submission time Handle Problem Language Result Execution time Memory
401381 2021-05-10T05:09:39 Z ZikXewen Strange Device (APIO19_strange_device) C++17
100 / 100
 533 ms 32112 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long int64;
typedef pair<int64, int64> ii;
int N;
int64 A, B, per, ans;
vector<ii> ar;
int main(){
    ios::sync_with_stdio(0), cin.tie(0);
    cin >> N >> A >> B;
    if(A / __gcd(A, B + 1) >= LLONG_MAX / B) per = LLONG_MAX;
    else per = A / __gcd(A, B + 1) * B;
    for(int64 i = 0, u, v; i < N; ++i){
        cin >> u >> v;
        if(v - u + 1 >= per) {cout << per; return 0;}
        u %= per, v %= per;
        if(u <= v) ar.emplace_back(u, v);
        else ar.emplace_back(u, per - 1), ar.emplace_back(0, v);
    }
    sort(ar.begin(), ar.end());
    for(int64 i = 0, l = 0, r = -1;; ++i){
        if(i == ar.size()) {ans += r - l + 1; break;}
        if(ar[i].first <= r) r = max(r, ar[i].second);
        else ans += r - l + 1, l = ar[i].first, r = ar[i].second;
    }
    cout << ans;
}

Compilation message

strange_device.cpp: In function 'int main()':
strange_device.cpp:22:14: warning: comparison of integer expressions of different signedness: 'int64' {aka 'long long int'} and 'std::vector<std::pair<long long int, long long int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   22 |         if(i == ar.size()) {ans += r - l + 1; break;}
      |            ~~^~~~~~~~~~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 5 ms 976 KB Output is correct
3 Correct 7 ms 976 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 316 KB Output is correct
16 Correct 5 ms 976 KB Output is correct
17 Correct 50 ms 2904 KB Output is correct
18 Correct 1 ms 204 KB Output is correct

Subtask #2
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 204 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 204 KB Output is correct

Subtask #3
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 2 ms 332 KB Output is correct
5 Correct 329 ms 16852 KB Output is correct

Subtask #4
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 461 ms 17344 KB Output is correct
3 Correct 452 ms 17344 KB Output is correct
4 Correct 439 ms 17316 KB Output is correct

Subtask #5
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 461 ms 17344 KB Output is correct
3 Correct 452 ms 17344 KB Output is correct
4 Correct 439 ms 17316 KB Output is correct
5 Correct 1 ms 204 KB Output is correct
6 Correct 481 ms 17368 KB Output is correct
7 Correct 464 ms 17316 KB Output is correct
8 Correct 486 ms 17340 KB Output is correct
9 Correct 505 ms 17312 KB Output is correct

Subtask #6
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 256 KB Output is correct
2 Correct 461 ms 17344 KB Output is correct
3 Correct 452 ms 17344 KB Output is correct
4 Correct 439 ms 17316 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 45 ms 2844 KB Output is correct
7 Correct 48 ms 2880 KB Output is correct
8 Correct 44 ms 2864 KB Output is correct
9 Correct 46 ms 3008 KB Output is correct
10 Correct 44 ms 2908 KB Output is correct
11 Correct 47 ms 2952 KB Output is correct
12 Correct 44 ms 2868 KB Output is correct
13 Correct 48 ms 2880 KB Output is correct
14 Correct 44 ms 2852 KB Output is correct
15 Correct 51 ms 2964 KB Output is correct
16 Correct 51 ms 2880 KB Output is correct
17 Correct 45 ms 2924 KB Output is correct
18 Correct 453 ms 17224 KB Output is correct
19 Correct 454 ms 17536 KB Output is correct
20 Correct 506 ms 17268 KB Output is correct
21 Correct 48 ms 2888 KB Output is correct
22 Correct 42 ms 2888 KB Output is correct
23 Correct 140 ms 9104 KB Output is correct

Subtask #7
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 49 ms 2960 KB Output is correct
3 Correct 52 ms 2880 KB Output is correct
4 Correct 520 ms 17172 KB Output is correct
5 Correct 47 ms 2888 KB Output is correct
6 Correct 48 ms 2880 KB Output is correct
7 Correct 48 ms 2888 KB Output is correct
8 Correct 49 ms 2860 KB Output is correct
9 Correct 58 ms 2884 KB Output is correct
10 Correct 48 ms 2828 KB Output is correct
11 Correct 49 ms 2684 KB Output is correct
12 Correct 44 ms 2752 KB Output is correct
13 Correct 48 ms 2752 KB Output is correct
14 Correct 493 ms 17104 KB Output is correct
15 Correct 48 ms 2760 KB Output is correct
16 Correct 448 ms 17116 KB Output is correct
17 Correct 449 ms 17060 KB Output is correct
18 Correct 1 ms 204 KB Output is correct

Subtask #8
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 208 KB Output is correct
2 Correct 5 ms 976 KB Output is correct
3 Correct 7 ms 976 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 208 KB Output is correct
6 Correct 1 ms 204 KB Output is correct
7 Correct 1 ms 320 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 208 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 316 KB Output is correct
16 Correct 5 ms 976 KB Output is correct
17 Correct 50 ms 2904 KB Output is correct
18 Correct 1 ms 204 KB Output is correct
19 Correct 1 ms 204 KB Output is correct
20 Correct 1 ms 204 KB Output is correct
21 Correct 1 ms 204 KB Output is correct
22 Correct 1 ms 204 KB Output is correct
23 Correct 1 ms 204 KB Output is correct
24 Correct 1 ms 204 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 2 ms 332 KB Output is correct
28 Correct 329 ms 16852 KB Output is correct
29 Correct 1 ms 256 KB Output is correct
30 Correct 461 ms 17344 KB Output is correct
31 Correct 452 ms 17344 KB Output is correct
32 Correct 439 ms 17316 KB Output is correct
33 Correct 1 ms 204 KB Output is correct
34 Correct 481 ms 17368 KB Output is correct
35 Correct 464 ms 17316 KB Output is correct
36 Correct 486 ms 17340 KB Output is correct
37 Correct 505 ms 17312 KB Output is correct
38 Correct 1 ms 316 KB Output is correct
39 Correct 45 ms 2844 KB Output is correct
40 Correct 48 ms 2880 KB Output is correct
41 Correct 44 ms 2864 KB Output is correct
42 Correct 46 ms 3008 KB Output is correct
43 Correct 44 ms 2908 KB Output is correct
44 Correct 47 ms 2952 KB Output is correct
45 Correct 44 ms 2868 KB Output is correct
46 Correct 48 ms 2880 KB Output is correct
47 Correct 44 ms 2852 KB Output is correct
48 Correct 51 ms 2964 KB Output is correct
49 Correct 51 ms 2880 KB Output is correct
50 Correct 45 ms 2924 KB Output is correct
51 Correct 453 ms 17224 KB Output is correct
52 Correct 454 ms 17536 KB Output is correct
53 Correct 506 ms 17268 KB Output is correct
54 Correct 48 ms 2888 KB Output is correct
55 Correct 42 ms 2888 KB Output is correct
56 Correct 140 ms 9104 KB Output is correct
57 Correct 1 ms 204 KB Output is correct
58 Correct 49 ms 2960 KB Output is correct
59 Correct 52 ms 2880 KB Output is correct
60 Correct 520 ms 17172 KB Output is correct
61 Correct 47 ms 2888 KB Output is correct
62 Correct 48 ms 2880 KB Output is correct
63 Correct 48 ms 2888 KB Output is correct
64 Correct 49 ms 2860 KB Output is correct
65 Correct 58 ms 2884 KB Output is correct
66 Correct 48 ms 2828 KB Output is correct
67 Correct 49 ms 2684 KB Output is correct
68 Correct 44 ms 2752 KB Output is correct
69 Correct 48 ms 2752 KB Output is correct
70 Correct 493 ms 17104 KB Output is correct
71 Correct 48 ms 2760 KB Output is correct
72 Correct 448 ms 17116 KB Output is correct
73 Correct 449 ms 17060 KB Output is correct
74 Correct 1 ms 204 KB Output is correct
75 Correct 1 ms 204 KB Output is correct
76 Correct 1 ms 204 KB Output is correct
77 Correct 1 ms 204 KB Output is correct
78 Correct 1 ms 204 KB Output is correct
79 Correct 5 ms 976 KB Output is correct
80 Correct 533 ms 31940 KB Output is correct
81 Correct 533 ms 32040 KB Output is correct
82 Correct 500 ms 32036 KB Output is correct
83 Correct 502 ms 32036 KB Output is correct
84 Correct 502 ms 32036 KB Output is correct
85 Correct 495 ms 32112 KB Output is correct
86 Correct 142 ms 18480 KB Output is correct
87 Correct 1 ms 204 KB Output is correct